Search Results - "Freund, L.B."

Substrate curvature due to thin film mismatch strain in the nonlinear deformation range by Freund, L.B.

“…The physical system considered is a thin film bonded to the surface of an initially flat circular substrate, in the case when a residual stress exists due to…”
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Mechanics of compressive stress evolution during thin film growth by Guduru, P.R., Chason, E., Freund, L.B.

“…Based on recent in situ measurements, Chason et al. (2002) proposed that the evolution of compressive stress during thin film growth by vapor deposition is due…”
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The dynamics of multiple neck formation and fragmentation in high rate extension of ductile materials by Guduru, P.R., Freund, L.B.

“…Dynamic necking bifurcation in rapidly extending cylindrical rods is investigated. It has been found that both short wavelength and long wavelength…”
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Some elementary connections between curvature and mismatch strain in compositionally graded thin films by Freund, L.B.

“…A thin film structure with through-the-thickness variation of properties and/or mismatch strain is considered. The relationship of the overall curvature of the…”
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Minimum energy configuration of epitaxial material clusters on a lattice-mismatched substrate by Kukta, R.V., Freund, L.B.

“…Strained epitaxial material clusters or islands grown on a relatively thick substrate are considered in the context of continuum mechanics. The islands and the…”
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A variational approach to nonlinear dynamics of nanoscale surface modulations by SHENOY, V. B, RAMASUBRAMANIAM, A, FREUND, L. B

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Characterizing the resistance generated by a molecular bond as it is forcibly separated by Freund, L.B

“…The goal of measurements of the resisting force generated by a molecular bond as it is being forcibly separated under controlled conditions is to determine…”
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Pressure induced by thermal fluctuation of an elastic filament confined within a narrow channel by Freund, L.B.

“…Consider a flexible macro-molecule that is immersed in water at or above room temperature. As a result of thermal motion within the water, the filament is…”
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The translational force acting on an elastic filament confined in a fluid-filled channel of varying width by Jonsdottir, F., Freund, L.B.

“…A phenomenon that is exploited in material processing and also arises naturally in material systems is the confinement of a flexible elastic filament within a…”
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Brittle crack growth modeled as the forced separation of chemical bonds within a K-field by Freund, L.B.

“…The focus here is the growth of a planar crack in a brittle material under two dimensional plane strain conditions. The stress field surrounding the crack edge…”
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Quantification of the forces driving self-assembly of three-dimensional microtissues by Youssef, Jacquelyn, Nurse, Asha K, Freund, L.B, Morgan, Jeffrey R

“…In a nonadhesive environment, cells will self-assemble into microtissues, a process relevant to tissue engineering. Although this has been recognized for some…”
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Equilibrium surface roughness of a strained epitaxial film due to surface diffusion induced by interface misfit dislocations by Jonsdottir, F., Freund, L.B.

“…In recent years, developments in the microelectronics industry have led to extensive studies of the growth and characterization of thin solid films and their…”
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Forced detachment of a vesicle in adhesive contact with a substrate by Lin, Yuan, Freund, L.B.

“…We consider the forced detachment of a thin-walled vesicle bonded to a substrate for two particular cases. In both cases, the configuration is…”
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A critical thickness condition for triangular strained quantum wires grown in V-grooves on a patterned substrate by Gosling, T.J., Freund, L.B.

“…The physical system under study is a quantum wire of triangular cross-section grown epitaxially in a V-shaped groove on a patterned (100) surface of a cubic…”
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The role of binder mobility in spontaneous adhesive contact and implications for cell adhesion by Freund, L.B., Lin, Yuan

“…The standard view of mechanical adhesive contact is as a competition between a reduction in free energy when surfaces with bonding potential come into contact…”
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Extensions of the Stoney formula for substrate curvature to configurations with thin substrates or large deformations by Freund, L. B., Floro, J. A., Chason, E.

“…Two main assumptions which underlie the Stoney formula relating substrate curvature to mismatch strain in a bonded thin film are that the film is very thin…”
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Stress evolution during growth of 1-D island arrays: Kinetics and length scaling by Chason, E., Engwall, A.M., Miller, C.M., Chen, C.-H., Bhandari, A., Soni, S.K., Hearne, S.J., Freund, L.B., Sheldon, B.W.

“…To explore the mechanisms controlling residual stress in thin films, we have measured the stress evolution during electrodeposition of Ni on lithographically…”
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Formation energies and equilibrium configurations of dislocation arrays with alternating Burgers vectors in layered heterostructures by Feng, Gang, Freund, L.B.

“…Cubic layered heterostructures are indispensable features of many electronic devices; however, the lattice mismatch tends to induce defects, e.g. dislocations…”
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The competition between Brownian motion and adhesion in soft materials by Lin, Yuan, Inamdar, Mandar, Freund, L.B.

“…The phenomenon considered is the potential for adhesion between a membrane and a nearby substrate through bonding of receptor molecules in the membrane to…”
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A continuum description of the energetics and evolution of stepped surfaces in strained nanostructures by Shenoy, V.B., Freund, L.B.

“…As a departure from existing continuum approaches for describing the stability and evolution of surfaces of crystalline materials, this article provides a…”
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